The invention of the cotton gin was a revolution in the cotton industry. Due to the manner in which this sector was exploited in the US, it led to a large increase in slavery in the Southern states, in order to meet the constantly growing demand for cotton using a larger workforce.
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Cherokee removal, part of the Trail of Tears, refers to the forced relocation between 1836 and 1839 of the Cherokee Nation from their lands in Georgia<span>, </span>South<span> Carolina,</span>North Carolina<span>, </span>Tennessee<span>, Texas, and </span>Alabama<span> to the </span>Indian<span> Territory (present day </span><span>Oklahoma)</span>
Answer:
c. voluntary participation
Explanation:
In the context, Professor Smith conducts a research in the dating behaviors of her college students. She wishes to track the students dating behavior through their entire college careers. So on her first class she explains her research work to the students and does the survey during the class.
Thus in this case, the research has an effect on the voluntary participation of the college students as all the students present in her class was given the survey to complete and they were not asked for their voluntary participation in he survey.
Hence the correct option is (c).
Heat is essential in melting rocks. Once the preexisting rock melts and then cools inside or on the earth's crust igneous rocks are formed. Heat and pressure are essential in the process of metamorphism. Heat can create new rocks from preexisting rocks by a process called contact metamorphism, forming rocks such as hornfels. Pressure can create foliated rocks such as schist's, slate and gneiss
